Washington (CNN) - American voters are divided on whether they want the GOP to win control of the Senate in November's elections, according to a new national poll.

And a Quinnipiac University survey also indicates the race for the 2016 Republican presidential nomination remains a free-for-all among the potential contenders, while Hillary Clinton, if she runs for the White House again, would be the prohibitive frontrunner for the Democratic nomination.

(CNN) - The campaign of the tea party-backed challenger who narrowly lost a Republican primary runoff in Mississippi to longtime Sen. Thad Cochran said it's building the evidence needed to legally contest those results.

"The evidence we have found so far, which will in part serve as the basis for a challenge, is promising," Noel Fritsch, spokesman for state Sen. Chris McDaniel, told CNN Monday. Fritsch spoke to CNN as attorneys for the campaign told reporters at a news conference at the Hinds County courthouse in Jackson, Mississippi that they will go through ballot boxes, including absentees, before taking legal action.

(CNN) - Hillary Clinton pushed back at ongoing criticism of her providing legal defense decades ago to an accused rapist, explaining that she had asked not to be assigned to the case but ultimately had a responsibility to represent her client.

In 1975, Clinton, a 27-year-old attorney, was appointed by a judge to represent Thomas Alfred Taylor, a 41-year-old man accused of raping a young girl, for free while working at the legal aid clinic at the University of Arkansas.

(CNN) - This year's U.S. Senate race in South Carolina might be getting a lot more interesting.

Thomas Ravenel – a reality TV star and former Republican state treasurer who was forced to resign from office after being indicted on federal drug charges – announced Friday that he would run as an independent candidate against GOP Sen. Lindsey Graham.

(CNN) - The tea party-backed challenger who narrowly lost a Republican primary runoff in Mississippi to longtime Sen. Thad Cochran says he plans to file a legal challenge contesting those results "any day now."

State Sen. Chris McDaniel said Friday on CNN's "New Day" that "the integrity of the process matters. We believe on that night of June 24 there were thousands of irregularities and we've already found thousands of irregularities in the process."

(CNN) - Former President George W. Bush gets more blame than his successor in the White House for the situation in Iraq, according to a new national poll which also indicates that majority of voters nationwide say President Barack Obama's move to withdraw all U.S. troops from Iraq in 2011 was the right thing to do.

But a Quinnipiac University survey released Thursday also indicates voters give Obama negative grades on how he's handling the current unrest in war torn Iraq.